{ "contractName": "SafeMath64", "abi": [], "bytecode": "0x604c602c600b82828239805160001a60731460008114601c57601e565bfe5b5030600052607381538281f30073000000000000000000000000000000000000000030146080604052600080fd00a165627a7a7230582031719416f4f24d6b9468cd7d6506c103f353caf36ff95c9231aacfce8635c8e70029", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fd00a165627a7a7230582031719416f4f24d6b9468cd7d6506c103f353caf36ff95c9231aacfce8635c8e70029", "sourceMap": "430:1849:60:-;;132:2:-1;166:7;155:9;146:7;137:37;252:7;246:14;243:1;238:23;232:4;229:33;270:1;265:20;;;;222:63;;265:20;274:9;222:63;;298:9;295:1;288:20;328:4;319:7;311:22;352:7;343;336:24", "deployedSourceMap": "430:1849:60:-;;;;;;;;", "source": "// See https://github.com/OpenZeppelin/openzeppelin-solidity/blob/d51e38758e1d985661534534d5c61e27bece5042/contracts/math/SafeMath.sol\n// Adapted for uint64, pragma ^0.4.24, and satisfying our linter rules\n// Also optimized the mul() implementation, see https://github.com/aragon/aragonOS/pull/417\n\npragma solidity ^0.4.24;\n\n\n/**\n * @title SafeMath64\n * @dev Math operations for uint64 with safety checks that revert on error\n */\nlibrary SafeMath64 {\n string private constant ERROR_ADD_OVERFLOW = \"MATH64_ADD_OVERFLOW\";\n string private constant ERROR_SUB_UNDERFLOW = \"MATH64_SUB_UNDERFLOW\";\n string private constant ERROR_MUL_OVERFLOW = \"MATH64_MUL_OVERFLOW\";\n string private constant ERROR_DIV_ZERO = \"MATH64_DIV_ZERO\";\n\n /**\n * @dev Multiplies two numbers, reverts on overflow.\n */\n function mul(uint64 _a, uint64 _b) internal pure returns (uint64) {\n uint256 c = uint256(_a) * uint256(_b);\n require(c < 0x010000000000000000, ERROR_MUL_OVERFLOW); // 2**64 (less gas this way)\n\n return uint64(c);\n }\n\n /**\n * @dev Integer division of two numbers truncating the quotient, reverts on division by zero.\n */\n function div(uint64 _a, uint64 _b) internal pure returns (uint64) {\n require(_b > 0, ERROR_DIV_ZERO); // Solidity only automatically asserts when dividing by 0\n uint64 c = _a / _b;\n // assert(_a == _b * c + _a % _b); // There is no case in which this doesn't hold\n\n return c;\n }\n\n /**\n * @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).\n */\n function sub(uint64 _a, uint64 _b) internal pure returns (uint64) {\n require(_b <= _a, ERROR_SUB_UNDERFLOW);\n uint64 c = _a - _b;\n\n return c;\n }\n\n /**\n * @dev Adds two numbers, reverts on overflow.\n */\n function add(uint64 _a, uint64 _b) internal pure returns (uint64) {\n uint64 c = _a + _b;\n require(c >= _a, ERROR_ADD_OVERFLOW);\n\n return c;\n }\n\n /**\n * @dev Divides two numbers and returns the remainder (unsigned integer modulo),\n * reverts when dividing by zero.\n */\n function mod(uint64 a, uint64 b) internal pure returns (uint64) {\n require(b != 0, ERROR_DIV_ZERO);\n return a % b;\n }\n}\n", "sourcePath": "@aragon/os/contracts/lib/math/SafeMath64.sol", "ast": { "absolutePath": 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